Overview
The ZF 0631.329.172 SPRING PIN is a precision-engineered OEM genuine part designed for the WG100, WG130, and WG131 transmission series. This critical fastener secures the differential assembly within the transmission housing, ensuring that components such as the 2093109002: DIFFERENTIAL remain properly aligned under high torque loads. The SKU 0631.329.172 functions as a locating pin that prevents rotational movement of mating parts, directly supporting the 0750117075: TAPER ROLLER BEARING and the 2093209095: DIFFERENTIAL assembly. Without this spring pin, the 2093309071: DIFF.HOUSING cannot maintain its structural integrity during operation.
Symptoms of Failure
- Transmission gear slipping under load: A worn 0631.329.172 spring pin allows the differential to shift, causing intermittent power loss and gear disengagement during acceleration.
- Unusual metallic rattling from the differential housing: When the spring pin fractures, loose metal fragments create a distinct clattering noise, especially during deceleration or turns.
- Oil seepage near the pin bore: A deformed spring pin compromises the seal between the differential and housing, leading to gradual ATF leaks that worsen over time.
- Premature taper roller bearing wear: Misalignment caused by a failed spring pin accelerates wear on the 0750117075: TAPER ROLLER BEARING, producing vibration and heat.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0631.329.172 |
| Material | Spring steel (DIN 17223), oil-hardened |
| Diameter (nominal) | 8.0 mm |
| Length | 32.0 mm |
| Weight | 12.5 g |
| OEM Reference | ZF 0631.329.172 |
| Hardness | HRC 44-48 |
| Related Spring Pin | 0631100223: SPRING PIN |
| Related Thrust Washer | 0730300820: THRUST WASHER |
| Related Axle Bevel Gear | 4482360002: AXLE BEVEL GEAR |
| Related Differential Axle | 2097309085: DIFFERENTIAL AXLE |
| Related Thrust Washer | 5838300811: THRUST WASHER |
| Related Differential Bevel Gear | 4482360001: DIFFERENTIAL BEVEL GEAR |
Compatibility
This OEM spring pin is engineered for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with certain variants of the WG180 and WG200 series where the differential housing uses a 8mm spring pin bore. Always verify the part number 0631.329.172 against your transmission’s service manual before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation |
| 2093209095 | DIFFERENTIAL | Alternate differential assembly |
| 2093309071 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Alternative spring pin variant |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axles |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Secondary axial load support |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can I reuse the 0631.329.172 spring pin after removal?
A: No. This spring pin is a single-use fastener. Reusing it risks deformation and loss of clamping force, which can lead to differential misalignment and gear damage.
Q: How do I know if this pin fits my WG130 transmission?
A: Check the pin bore diameter in your differential housing. The 0631.329.172 has an 8mm nominal diameter and 32mm length. If your original pin measures differently, select the 0631100223: SPRING PIN for alternative sizing.
Q: What torque should I apply when installing this spring pin?
A: Spring pins are press-fit components and do not require torque. Use a drift punch to seat the pin flush with the housing surface. Ensure the 2093309071: DIFF.HOUSING is properly aligned before insertion.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
